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Diamond industry's 'hungry crocodile' chart just doesn't cut it

It oversimplifies the fact that the industry's 15,000 categories of diamonds perform in very different ways

Over the past year, rough diamond prices have risen 8 per cent. But lower quality stones have underperformed the wider market, with some categories of cheap diamonds falling as much as 20 per cent.


THE diamond industry's most famous chart is the hungry crocodile, the ancient reptile's jaws wide open, reflecting both a predicted shortage of gems and the inevitable price rises that will come with it.

Not only has this chart, which has been an industry staple for more...

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